Questions & Answers about El paquete en la mesa es para ti.
Why does it say para ti instead of para tú?
After prepositions like para (for), de (from/of), and a (to), Spanish uses special prepositional pronouns. For 'you' (informal singular), you must use ti. You cannot use the subject pronoun tú immediately after these prepositions.
Does ti need an accent mark like mí or tú?
Doesn't en usually mean 'in'? Why does it mean 'on' here?
The preposition en is very versatile and can mean 'in', 'on', or 'at' depending on the context. Since a package is typically placed on top of a table, en la mesa naturally translates to 'on the table' here.
I learned we use estar for locations. Since the package is on the table, why do we use es instead of está?
That is a great observation! While en la mesa describes a location, it is just part of the subject describing which package we mean ('The package on the table'). The main point of the sentence is telling us who the package is intended for. We always use the verb ser (here, es) to talk about the destination or recipient of an object.